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  • Messerschmitt Me 328 Parasite Fighter Concept

    The Messerschmitt Me 328 was intended from the beginning to be an easy-to-produce fighter designed for mass production.

     Updated: 5/16/2016; Authored By Captain Jack; Content ¬©www.MilitaryFactory.com

    The "parasite" fighter had long held an interest within the minds of aircraft engineers, particularly as new methods of propulsion were being investigated and formally tested. The concept of the parasite fighter was simple enough in theory, but - time and again - proved near impossible in practice. The general idea behind it was to supply those lumbering bomber formations with a capable fighter design by allowing these bombers to "carry" their own fighter defense wherever they went. Once enemy fighters were spotted, the parasite fighters would be unleashed from their host aircraft to engage the enemy. From there, the parasite fighter could either be recovered by the host aircraft (using some elaborate and often times dangerous retrieval scheme) or the fighter pilot could simply bail out of his aircraft over friendly territory, ready to be picked up by friendlies. The Messerschmitt 328 was intended as such a parasite contraption and was envisioned as part of the inherent defense system of the optimistic German "super bombers" being planned. However, the smallish Me 328 languished through an unexpectedly long development period that ultimately saw itself produced in a few workable prototypes. Early forms were engine-less gliders while later forms were trialled with "pulse jet" engines. A third design even fitted a single turbojet engine. Needless to say, the Me 328 failed to materialized into any serious production form prior to the end of the war, this mostly being due to the insufficient mix of airframe with the aforementioned pulse jet engines. Despite the projects cancellation, the Me 328 was seriously considered to fulfill an array of roles being considered by German High Command - it being thought as a good candidate to fulfill a larger body of roles other than that of parasite fighter.


    The Me 328 began as project "P.1073" for the Messerschmitt firm sometime in 1941. Messerschmitt had solidified its name in the war up to this point thanks to their excellent Messerschmitt BF 109 fighter design - a single-seat, single-engine airframe that gave even the spectacular Supermarine Spitfire and North American P-51 Mustang a run for their money. The BF 109 went on to become one of the most produced fighters of the war. Messerschmitt was also responsible for the design and ultimately production of what is hailed as the world's first jet-powered fighter in the Me 262 "Schwalbe". Like many of the other well-known German aviation firms during the war, Messerschmitt did not shy away from expanding its horizon when it came to new aircraft designs that would be powered in a myriad of ways.

    In her original guise, the P.1073 was to fulfill the role of bomber escort. German bombers would have had to fit some modifications to their airframe to make this happen, either launching their parasite fighter defense by tow lines or launch rails. To keep production costs down, the design was to be constructed of wood wherever possible, a practice still common throughout World War 2 despite the heavy use of metal-skinned aircraft. Three major base forms were conceived with the first expected to be a powerless glider. The second was to feature a pair of pulsejet engines for its propulsion. The third design was of particular note in its intended use of a Junkers Jumo 004 series turbojet engine.


    The Me P.1073 project was delivered for further research to the German Research Institute for Sailplane Flight to which two competent variants ultimately arose - the Messerschmitt fighter-minded "Me 328A" and the bomber-minded "Me 328B" - this by 1942. Since the idea was to provide the Luftwaffe with a cost-effective solution, the Me 328 airframe would be only slightly modified between the two forms and the designw as small enough to still be considered for the parasite fighter role. It was estimated that the production of one Me 328 would come in at only a fraction of what it cost to produce just one of the two main German fighters of the time - the BF 109 and Focke-Wulf Fw 190.


    Two workable prototype glider aircraft were completed and tested at altitudes between 10,000 and 20,000 feet, this accomplished using a Dornier Do 217 series twin-engine, medium bomber. Additional testing included fitting the airframe with rockets for ground-based self-launching under its own power and not having to rely on a host aircraft to get aloft. Progress was deemed promising and seven more prototypes - these fitted with 2 x Argus As 014 series pulsejet engines each - soon joined the original prototype pair. Several static tests ensued with these pulsejet-powered airframes but excessive vibration soon grounded the lot. Vibrations were a cause of concern and generally put the pilot at risk of losing control of his mount or having his aircraft fall apart altogether. This effect was also noted in the development of the V-1 rocket which used the same propulsion method. The vibration issue was never fully solved for the Me 328 and the program was more or less ended by the middle of 1944. The proposed 2 x 20mm MG 151/20 cannon armament was never fitted.

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    Messerschmitt Me 328 Technical Specifications

    Service Year: 1944
    Type: Parasite Fighter Concept
    National Origin: Nazi Germany
    Manufacturer(s): Messerschmitt - Germany
    Production Total: 7

    Structural (Crew Space, Dimensions and Weights)

    Operating Crew: 1
    Length: 28.31 feet (8.63 meters)
    Width: 21.00 feet (6.40 meters)
    Height: 6.89 feet (2.10 meters)

    Weight (Empty): 4,057 lb (1,840 kg)
    Weight (MTOW): 5,895 lb (2,674 kg)

    Installed Power and Standard Day Performance

    Engine(s): 2 x Argus As 014 pulsejet engines delivering 1,320lbf of thrust each.

    Maximum Speed: 375 mph (604 kph; 326 knots)
    Maximum Range: 351 miles (565 km)
    Service Ceiling: 30,512 feet (9,300 meters; 5.78 miles)

    Armament / Mission Payload

    PROPOSED (Never Fitted):
    2 x 20mm MG 151/20 cannons

    Global Operators / Customers

    Nazi Germany

    Model Variants (Including Prototypes)

    P.1073 - Initial Project Designation

    Me 328A - Proposed Dedicated Fighter; fitted with 2 OR 4 x x Argus As 014 pulsejet engines.

    Me 328B - Proposed Dedicated Bomber; fitted with 2 OR 4 x x Argus As 014 pulsejet engines.

    Me 328C - Proposed Piloted Suicide Bomb; fitted with a Junkers Jumo 004 turbojet engine; to carry a 2,000lb warhead as part of the "Leonidas Squadron".